/**
 * Created by jiachenpan on 16/11/18.
 */

export function parseTime(time, cFormat) {
    if (arguments.length === 0) {
        return null;
    }
    const format = cFormat || '{y}-{m}-{d} {h}:{i}:{s}';
    let date;
    if (typeof time === 'object') {
        date = time;
    } else {
        if ((typeof time === 'string') && (/^[0-9]+$/.test(time))) {
            time = parseInt(time);
        }
        if ((typeof time === 'number') && (time.toString().length === 10)) {
            time = time * 1000;
        }
        date = new Date(time);
    }
    const formatObj = {
        y: date.getFullYear(),
        m: date.getMonth() + 1,
        d: date.getDate(),
        h: date.getHours(),
        i: date.getMinutes(),
        s: date.getSeconds(),
        a: date.getDay()
    };
    const time_str = format.replace(/{(y|m|d|h|i|s|a)+}/g, (result, key) => {
        let value = formatObj[key];
        // Note: getDay() returns 0 on Sunday
        if (key === 'a') { return ['日', '一', '二', '三', '四', '五', '六'][value ]; }
        if (result.length > 0 && value < 10) {
            value = '0' + value;
        }
        return value || 0;
    });
    return time_str;
}

export function formatTime(time, option) {
    time = +time * 1000;
    const d = new Date(time);
    const now = Date.now();

    const diff = (now - d) / 1000;

    if (diff < 30) {
        return '刚刚';
    } else if (diff < 3600) {
    // less 1 hour
        return Math.ceil(diff / 60) + '分钟前';
    } else if (diff < 3600 * 24) {
        return Math.ceil(diff / 3600) + '小时前';
    } else if (diff < 3600 * 24 * 2) {
        return '1天前';
    }
    if (option) {
        return parseTime(time, option);
    } else {
        return (
            d.getMonth()
      + 1
      + '月'
      + d.getDate()
      + '日'
      + d.getHours()
      + '时'
      + d.getMinutes()
      + '分'
        );
    }
}

// 格式化时间
export function getQueryObject(url) {
    url = url == null ? window.location.href : url;
    const search = url.substring(url.lastIndexOf('?') + 1);
    const obj = {};
    const reg = /([^?&=]+)=([^?&=]*)/g;
    search.replace(reg, (rs, $1, $2) => {
        const name = decodeURIComponent($1);
        let val = decodeURIComponent($2);
        val = String(val);
        obj[name] = val;
        return rs;
    });
    return obj;
}

/**
 *get getByteLen
 * @param {Sting} val input value
 * @returns {number} output value
 */
export function getByteLen(val) {
    let len = 0;
    for (let i = 0; i < val.length; i++) {
        if (val[i].match(/[^\x00-\xff]/gi) != null) {
            len += 1;
        } else {
            len += 0.5;
        }
    }
    return Math.floor(len);
}

export function cleanArray(actual) {
    const newArray = [];
    for (let i = 0; i < actual.length; i++) {
        if (actual[i]) {
            newArray.push(actual[i]);
        }
    }
    return newArray;
}

export function param(json) {
    if (!json) return '';
    return cleanArray(
        Object.keys(json).map(key => {
            if (json[key] === undefined) return '';
            return encodeURIComponent(key) + '=' + encodeURIComponent(json[key]);
        })
    ).join('&');
}

export function param2Obj(url) {
    const search = url.split('?')[1];
    if (!search) {
        return {};
    }
    return JSON.parse(
        '{"'
      + decodeURIComponent(search)
          .replace(/"/g, '\\"')
          .replace(/&/g, '","')
          .replace(/=/g, '":"')
      + '"}'
    );
}

export function html2Text(val) {
    const div = document.createElement('div');
    div.innerHTML = val;
    return div.textContent || div.innerText;
}

export function objectMerge(target, source) {
    /* Merges two  objects,
     giving the last one precedence */

    if (typeof target !== 'object') {
        target = {};
    }
    if (Array.isArray(source)) {
        return source.slice();
    }
    Object.keys(source).forEach(property => {
        const sourceProperty = source[property];
        if (typeof sourceProperty === 'object') {
            target[property] = objectMerge(target[property], sourceProperty);
        } else {
            target[property] = sourceProperty;
        }
    });
    return target;
}

export function toggleClass(element, className) {
    if (!element || !className) {
        return;
    }
    let classString = element.className;
    const nameIndex = classString.indexOf(className);
    if (nameIndex === -1) {
        classString += '' + className;
    } else {
        classString
      = classString.substr(0, nameIndex)
      + classString.substr(nameIndex + className.length);
    }
    element.className = classString;
}

export const pickerOptions = [
    {
        text: '今天',
        onClick(picker) {
            const end = new Date();
            const start = new Date(new Date().toDateString());
            end.setTime(start.getTime());
            picker.$emit('pick', [start, end]);
        }
    },
    {
        text: '最近一周',
        onClick(picker) {
            const end = new Date(new Date().toDateString());
            const start = new Date();
            start.setTime(end.getTime() - 3600 * 1000 * 24 * 7);
            picker.$emit('pick', [start, end]);
        }
    },
    {
        text: '最近一个月',
        onClick(picker) {
            const end = new Date(new Date().toDateString());
            const start = new Date();
            start.setTime(start.getTime() - 3600 * 1000 * 24 * 30);
            picker.$emit('pick', [start, end]);
        }
    },
    {
        text: '最近三个月',
        onClick(picker) {
            const end = new Date(new Date().toDateString());
            const start = new Date();
            start.setTime(start.getTime() - 3600 * 1000 * 24 * 90);
            picker.$emit('pick', [start, end]);
        }
    }
];

export function getTime(type) {
    if (type === 'start') {
        return new Date().getTime() - 3600 * 1000 * 24 * 90;
    } else {
        return new Date(new Date().toDateString());
    }
}

export function debounce(func, wait, immediate) {
    let timeout, args, context, timestamp, result;

    const later = function () {
    // 据上一次触发时间间隔
        const last = +new Date() - timestamp;

        // 上次被包装函数被调用时间间隔last小于设定时间间隔wait
        if (last < wait && last > 0) {
            timeout = setTimeout(later, wait - last);
        } else {
            timeout = null;
            // 如果设定为immediate===true，因为开始边界已经调用过了此处无需调用
            if (!immediate) {
                result = func.apply(context, args);
                if (!timeout) context = args = null;
            }
        }
    };

    return function (...args) {
        context = this;
        timestamp = +new Date();
        const callNow = immediate && !timeout;
        // 如果延时不存在，重新设定延时
        if (!timeout) timeout = setTimeout(later, wait);
        if (callNow) {
            result = func.apply(context, args);
            context = args = null;
        }

        return result;
    };
}

/**
 * This is just a simple version of deep copy
 * Has a lot of edge cases bug
 * If you want to use a perfect deep copy, use lodash's _.cloneDeep
 */
export function deepClone(source) {
    if (!source && typeof source !== 'object') {
        throw new Error('error arguments', 'shallowClone');
    }
    const targetObj = source.constructor === Array ? [] : {};
    Object.keys(source).forEach(keys => {
        if (source[keys] && typeof source[keys] === 'object') {
            targetObj[keys] = deepClone(source[keys]);
        } else {
            targetObj[keys] = source[keys];
        }
    });
    return targetObj;
}

export function uniqueArr(arr) {
    return Array.from(new Set(arr));
}

export function isExternal(path) {
    return /^(https?:|mailto:|tel:)/.test(path);
}
export function floatMul(num1, num2) {
    let m = 0;
    let s1 = num1.toString();
    let s2 = num2.toString();
    try {
        m += s1.split('.')[1].length;
    } catch(e) {}
    try {
        m += s2.split('.')[1].length;
    } catch(e) {}
    return Number(s1.replace('.', '')) * Number(s2.replace('.', ''))/Math.pow(10, m);
}

/**
 * params num
 * return 0、1、2
 */
export function getPriceNum(num) {
    // let res = String(num).replace(/\.\d+/g, '');
    if (!num) {
        return 0;
    }
    if (num < 1000) {
        return 0;
    } else if (num >= 1000 && num < 10000) {
        return 1;
    } else if (num >= 10000) {
        return 2;
    }
}